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Crossed renal ectopia with fusion in a cat
1North Shore Veterinary Hospital, Crows Nest, NSW, Australia.
Summary
Crossed renal ectopia, a rare congenital kidney condition, is reported for the first time in a cat. This case highlights similarities and unique features compared to human presentations, including renal failure.
Area of Science:
- Veterinary Medicine
- Comparative Pathology
- Congenital Abnormalities
Background:
- Crossed renal ectopia is a rare congenital condition where one or both kidneys cross the midline and fuse with the contralateral kidney.
- It is typically asymptomatic in humans and rarely reported in veterinary literature.
Observation:
- A 7-year-old male cat presented with increased thirst and urination, and an abdominal mass.
- Diagnostic imaging revealed a fused left ectopic kidney and right orthotopic kidney.
Findings:
- This is the first documented case of crossed renal ectopia in a domestic cat.
- The cat exhibited concurrent renal failure and hypertension.
- Atypical features included the fused kidney's vascular supply, axial rotation, and the presence of renal disease.
Implications:
- This case expands the understanding of crossed renal ectopia in non-human species.
- It underscores the importance of considering congenital anomalies in feline diagnostics.
- Comparative analysis with human cases offers insights into potential genetic or developmental factors.